454 
THE TERTIARY VOLCANOES 
BOOK VIII 
Fia. 382. — Reversed fault ou the eastern 
side of Svinci, Faroe Isles. 
of their two sides. In Iceland, also, the great lava-emitting fissures seem to 
be in general free from marked displacements of that kind. 
The faults in the Inner Hebrides, so far as I have observed, are all 
normal, and indicate nothing more than gentle subsidence. But among 
, the Faroe Islands I have come upon 
several instances of reversed faults, which, 
in spite of the usually gentle inclinations 
of the basalts, probably point to more 
vigorous displacement within the terrestrial 
crust. 
On the east side of Svino a fault with 
a low hade runs from sea-level up to the top 
of the cliff, a height of several hundred feet. 
It has a downthrow of a few yards, but is 
a reversed fault, as will be seen from Fig. 
382. Another similar instance may be 
noticed on the north-east headland of Sando, where, however, on the up- 
cast side, the basalts appear as if they had been driven upward, a portion 
of them having been pushed up into a low arch (Fig. 383). 
When the Tertiary basalt -plateaux of the Hebrides and the Faroe 
Isles come to be worked out in detail, 
many examples of dislocation will doubt- 
less be discovered. We shall then learn 
more of the amount and effects of the 
terrestrial disturbances which have affected 
North-Western Europe since older Tertiary 
time. In the meantime evidence enough 
has been adduced to prepare us for 
proofs of very considerable recent displace- 
ments even among regions of crystalline 
schists, like that which has been disrupted 
by the Morven faults above alluded to. 
While the study of the Tertiary volcanic rocks demonstrates the vast 
general denudation of the country since older Tertiary time, the proofs that 
these rocks have been faulted acquire a special interest in relation to the 
origin and evolution of the topography of the region. 
Fig. 383. — Reversed fault on the north- 
east headland of Sando, Faroe Isle. 
